Improvement in blind-fastensngs



; Unirse Star-ns FarnN'r Ormea.

CHARLES A. PALMER, OF NEWBURG, NEW YORK.

IMPROVEMENT IN BLIND-FASTENINGS.

Specification forming part of Letters Patent No. 52A42. dated February6, 1866.

To all whom t may concern:

Be it known that I, CHARLES A. PALMER, of Newburg, in the county ofOrange and State of New York, have invented a new and Improved Fasteningfor Window-Blinds; and I do hereby declare that the following is a full,clear, and eXact description thereof, which will enable those skilled inthe art to make and use the same.

The present invention relates to a new and improved fastening forwindow-blinds, thc object of which is to prevent the blinds from beingopened upon the outside when closed; and it consists ininserting withinthat portieri of the sill ofthe window-frame against which the lowerrail of the sash-frame comes in contact when the window is shut, andbelow its surface, a staple of such a shape, for the hook upon the blindto interlock with, that when the blind is closed and its hook-fasteninginterlocked therewith, and the window closed and locked, it will beimpossible to unfasten the blind except the window be first unlockedvandsufficiently raised to allow the hook to be disengaged from said staple,as will be more fully explained in the following detail description,reference being had to the accompanying plate of drawings, of which-Figure l is a view showing my improved blind-fastening as applied to awindow-sill in This catch projects from the face of the blind which isupon the inside when the blind is closed, and from the outside face ofthe blind projects another catch-lever, d, similarly hung in the blindto the catch a, before referred to, the inner end of which is made ofsuch a shape as to interlock with the inner end of the catch a, so thatby raising or depressing either one of the catches, as the case may be,the other catch will move in the opposite direction.

The catch a engages with the fixed staple, usually secured in the wallof the house, when the blind is open, and retains it there untildisengaged therefrom by properly moving the catch a, as beforeexplained. But in lieu of the ordinary staples employed upon theWindow-sills for the inside catch, a, to interlock with, I insert withinthe window-sill, and below its face, at the proper point, ametallicplate, f, which plate is there secured by screws or in any other manner.To the inner edge, g, of this plate I hinge another flat andsimilar-shaped plate, h, which plate, when closed down and upon theplate g, is liush, or nearly so, with the surface of the sill, a notch,l, being made in the 4contact-surfaces of each of the said plates, ofthe proper shape to receive the hook-shaped end of the catch a, and whenpressure is applied to keep the plates closed upon one another retainthe said hook therein, and thus prevent the blind from being moved, or,in other words, opened, until relieved. This pressure upon or retentionof the plates together is secured by the shutting of the sash-framethereon, the plates being inserted at the proper point of thewindow-sill therefor, so that, as is obvious, if the blind is closed andits catch inserted in and between the said plates, with the window shutand locked, it is impossible to move the blind until the window has beenraised, the advantages and importance of which are manifest to allWithout any particular enumeration thereof herein.

A duplicate set ofthe sill-holding plates, of course, are to be used ineach window, one to each blind, `or one set may be made to answer forboth blinds, and although the weight of the hinged plate would, undermost circumstances, retain the blinds closed when the window is opened,itis obvious that, in order to render it perfectly secure, a button, forinstance, might be hung upon the window-sill, which, by turning it overthe hinged plate, would hold it firm in all cases, the sash-frame beingcut away sufficiently to set over it when the Window is closed.

What I claim as new, and desire to secure The above specification of myinvention signed by me this 21st day of September, 1865.

CHAS. A PALMER.

Witnesses ALBERT W. BROWN, M. M. LIVINGSTON.

